JPH11185730A - Stirring device for storage battery electrolyte - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a stirring device for a storage battery electrolyte capable of efficiently uniforming the specific gravity of electrolyte by stirring the electrolyte directly. SOLUTION: An impeller 11 is rotation free supported in a soaking state in the electrolyte 2 of an electrolyte vessel 1. The impeller 11 is coated by an insulator so that its permanent magnet is not damaged by the electrolyte 2. Drive blades 15 is positioned at the outside of the electrolyte vessel 1 opposite to the impeller 11 as sandwiching a side wall 1a. The drive blades 15 are fitted onto a shaft 15a linked with the output shaft of a drive motor 16, and are rotated by the rotation of the output shaft of the drive motor 16. The drive motor 16 is connected to a DC power source 18 via a timer circuit 17, for this DC power source 19, self storage power storing the power discharged by this storage battery is utilized. When the drive motor 16 is operated for a predetermined time with a predetermined period by the setting of the timer circuit 17, the drive blades 15 are rotated, and by its magnetic force the impeller 11 is rotated so that the electrolyte 2 is caused to flow and is stirred.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a stirring device for stirring an electrolyte in an electrolyte tank of a storage battery.

[0002]

2. Description of the Related Art A rechargeable battery is a device that charges and discharges by arranging electrodes in an electrolytic solution in an electrolytic solution tank and using a chemical reaction generated between the electrodes to generate a potential difference between the electrodes. As the charge and discharge progress, a difference occurs in the specific gravity between the electrolyte near the electrode and the electrolyte away from the electrode.
For this reason, the specific gravity is made uniform by stirring the electrolytic solution, and the performance of the storage battery is secured for a predetermined time. In order to stir the electrolytic solution, a stirrer is provided in the electrolytic solution tank. .

A conventional stirrer of this type blows air into an electrolytic solution tank, and its schematic structure is shown in FIG. An electrolyte tank 1 is filled with an electrolyte 2,
A blowing pipe 3 made of an insulator is inserted into the electrolyte 2. The tip of the blowing pipe 3 is located in the vicinity of the bottom plate of the electrolyte tank 1, and the base end is located outside the electrolyte tank 1 by projecting upward from the top plate of the electrolyte tank 1. A pipe 4 is connected to a base end of the blow pipe 3, and the pipe 4 is connected to a discharge port of a blow blower 6 with a flow control valve 5 interposed therebetween. The drive motor of the blower 6 receives power from the AC power supply 7.

When the blowing blower 6 operates, pressurized air is discharged from a discharge port, and the flow rate is adjusted through a flow control valve 5 to be blown out from the tip of the blowing pipe 3. Since the tip of the blowing pipe 3 is located in the electrolyte 2, the pressurized air is blown into the electrolyte 2 from the tip of the blowing pipe 3. The blown air rises from the lower part of the electrolytic solution 2 as a large number of air bubbles and diffuses from the liquid surface. Convection occurs in the electrolytic solution 2 as the bubbles rise, and the electrolytic solution 2 is stirred.

[0005]

However, in the above-described conventional stirring device, the principle of stirring the electrolyte by the bubbles that floats up is not to apply a stirring force directly to the electrolyte. It takes a considerable amount of time to reach the specific gravity, and the stirring efficiency is poor. In addition, a power supply such as an AC power supply 7 for driving the blow blower 6 is required, and control such as flow rate adjustment of the blow blower 6 must be performed. ing.

Accordingly, an object of the present invention is to improve the stirring efficiency by directly stirring the electrolytic solution, to make the specific gravity uniform in a short time, and to use the electric power discharged by itself. Accordingly, it is an object of the present invention to provide a storage battery electrolytic solution stirring device which is more economically advantageous.

[0007]

As a technical means for achieving the above object, a storage battery electrolyte agitator according to the present invention is a storage battery electrolyte agitator for agitating a storage battery electrolyte. In the electrolyte bath of the electrolyte, a stirring member is rotatably supported, and the stirring member is provided outside the electrolyte bath with a stirring drive member that applies a rotating force in a non-contact state with the stirring member. It is characterized in that the stirring member rotates to stir the electrolytic solution by the operation of the stirring driving member.

When the stirring drive member is operated, the stirring member rotates. If this stirring member is formed in an appropriate shape such as a rod shape, a propeller shape, a screw shape, or the like, the electrolyte solution is directly stirred by its rotation. By stirring, the specific gravity of the electrolytic solution can be made uniform, and the performance of the storage battery can be secured for a long time. In addition, since the stirring driving member is provided outside the electrolytic solution tank, components provided inside the electrolytic solution tank, such as the stirring member, may be made of an insulating material having corrosion resistance to the electrolytic solution. .

According to a second aspect of the present invention, as a preferable mechanism for rotating the stirring member inside the electrolyte tank by a stirring driving member outside the electrolyte tank, the stirring device for the storage battery electrolyte is provided. One is made of a magnetic material, the other is made of a permanent magnet, and the stirring member is covered with an insulator having corrosion resistance to the electrolytic solution.

The rotation of the stirring drive member is transmitted to the stirring member by exerting a magnetic force between the stirring drive member and the stirring member. That is, when the stirring driving member is rotated by being connected to an appropriate driving device, the stirring member is rotated in conjunction with the magnetic force. Therefore, the stirring driving member outside the electrolytic solution tank and the stirring member inside the electrolytic solution tank can be easily connected.

[0011] In addition, in order to provide a strong connection between the stirring driving member and the stirring member, the storage battery electrolyte stirring device according to the third aspect of the present invention is a storage battery electrolyte stirring device for stirring the storage battery electrolyte. In the stirring device of the above, in the electrolytic solution tank of the electrolytic solution, a stirring member coated with a permanent magnet and an insulator having corrosion resistance to the electrolytic solution is rotatably supported, and at a position facing the stirring member. Then, a stirring drive member formed of a permanent magnet is rotatably supported outside the electrolytic solution tank, and the stirring member rotates to stir the electrolyte with the rotation of the stirring drive member. Features.

By using a permanent magnet for both the stirring drive member and the stirring member, it is possible to connect them with a large magnetic force, and the stirring member can be reliably rotated. Further, since a bar magnet can be used for the stirring drive member and the stirring member, a simple structure can be achieved. When the stirring drive member is formed into a shape having a plurality of blades by a propeller shape or the like, a shape in which a bar magnet is attached to a portion of the stirring member facing the stirring drive member may be used.

According to a fourth aspect of the present invention, in the storage battery electrolyte stirring device, the stirring drive member is driven by the output rotation of the DC motor, and the rotation of the DC motor is performed by the electric power discharged by itself. Features.

Since the DC motor is operated by using the self-storage power of the storage battery and the stirring drive member is rotated by the output rotation, a driving device for rotating the stirring drive member separately from the storage battery is not required. . Therefore, a large-scale device other than the storage battery is not required, and the structure is simple, which is economically advantageous.

[0015]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, an apparatus for agitating an electrolyte for a storage battery according to the present invention will be described in detail with reference to a preferred embodiment shown in FIG. As shown in FIG. 1, a casing 10 is provided inside a side wall 1a of an electrolytic solution tank 1 filled with an electrolytic solution 2, and an impeller 11 as a stirring member is provided in the casing 10. . Shaft 11a of impeller 11
Both ends are rotatably supported by the casing 10 and the side wall 1a by bearings 11b. In this embodiment, the impeller
Numeral 11 designates a two-blade, in which a permanent magnet is covered with an insulating material which is not eroded by an electrolytic solution. The casing 10, the shaft 11a, and the bearing 11b are also formed of a material having corrosion resistance to the electrolytic solution. An appropriate number of suction holes 10a are formed in the peripheral wall plate of the casing 10, and an appropriate number of discharge holes 10b are formed in the side wall plate.

On the other hand, a driving blade 15 as a stirring driving member fitted to a shaft 15a is disposed outside the electrolytic solution tank 1 and at a position facing the impeller 11. The shaft 15a is connected to an output shaft of a drive motor 16 composed of a DC motor, and rotates by transmitting the rotation of the output shaft.
The drive blade 15 is configured to rotate by the operation of.
Note that the shaft 15a may be the output shaft of the drive motor 16, that is, the drive blade 15 may be directly fitted to the output shaft. The drive blade 15 may be rod-shaped, and is formed by a permanent magnet. The drive motor 16 is connected to a DC power supply 18 via a timer circuit 17. The DC power supply 18 uses the power stored by the DC power discharged by the storage battery. The driving blade 15 and the driving motor 16 are connected to the side wall 1a of the electrolytic solution tank 1.
Is housed in a casing 19 attached to the casing.

The operation of the embodiment of the apparatus for stirring the electrolytic solution for a storage battery according to the present invention constituted as described above will be described below.

The operation time and operation cycle of the drive motor 16 are set by the timer circuit 17. When the timer circuit 17 is turned on and power is supplied from the DC power supply 18 to the drive motor 16, the drive motor 16 operates, and its output shaft rotates to rotate the shaft 15.
a rotates. Since the driving blade 15 is fitted on the shaft 15a, the driving blade 15 rotates. This drive blade 15 formed of a permanent magnet has an impeller formed of a permanent magnet.
Since the permanent magnets 11 are provided to face each other, the impeller 11 rotates synchronously by the action of the magnetic force of these permanent magnets. The impeller 11 is provided in the electrolytic solution tank 1, and by its rotation, the electrolytic solution 2 is sucked into the casing 10 from the suction hole 10a and the electrolytic solution 2 in the casing 10 is discharged from the discharge hole 10b. Discharged. For this reason, the flow of the electrolytic solution 2 occurs in the electrolytic solution tank 1, and the electrolytic solution 2 is stirred, so that the specific gravity of the electrolytic solution 2 is made uniform.

When a predetermined time has elapsed, the timer circuit 17 is turned off, the drive motor 16 is stopped, and the DC power discharged from the storage battery is stored in the DC power supply 18.

In the embodiment described above, the case where the impeller 11 is formed of a permanent magnet has been described. However, the impeller 11 is not limited to the permanent magnet as long as it is affected by the magnetic force of the driving blade 15. It may be a magnetic material. When the impeller 11 has a structure including many blades, the impeller 11
A structure in which a bar-shaped permanent magnet is attached to a portion opposed to the driving blade 15 of FIG.

FIG. 2 is a view showing another embodiment for driving the impeller 11. As shown in FIG. The same parts as those in the embodiment shown in FIG. 1 are denoted by the same reference numerals, and description thereof will be omitted. A substantially circular concave portion 21 protruding outward is formed in a part of the side wall 1a of the electrolytic solution tank 1, and a casing 22 is provided so as to cover the concave portion 21. A shaft 23a is rotatably supported by a side wall plate of the casing 22 and a bottom plate of the concave portion 21 via a bearing 23b. The shaft 23a is a part of the shaft 23a and is stirred at a position inside the electrolytic solution tank 1. An impeller 23 as a member is fitted. A driven rotor portion 25 made of a permanent magnet is provided on a portion of the shaft 23a located at the concave portion 21 via a boss portion 24. An appropriate number of suction holes 22a are formed in the peripheral wall plate of the casing 22, and an appropriate number of discharge holes 22b are formed in the side wall plate.

On the other hand, outside the recess 21,
A drive rotor section 26, which is a stirring drive member, is disposed so as to face the driven rotor section 25 with the peripheral wall of the 21 interposed therebetween.
The drive rotor unit 26 is connected to the output shaft of the drive motor 16 and is fixedly mounted on a base plate 27 fitted to the end of a shaft 15a that rotates by transmitting the rotation of the output shaft. The shaft 15a may be the output shaft. The shaft 15a and the shaft 23 of the impeller 23
It is arranged so that it is coaxial with a. The drive motor 16 is provided with a timer circuit 17 as in the embodiment shown in FIG.
Is connected to the DC power supply 18.

In the embodiment shown in FIG. 2, the drive motor
When the output shaft 16 rotates and the shaft 15a rotates, the drive rotor 26 turns around the recess 21. The driving rotor section 26 is formed of a permanent magnet, and the driven rotor section 25 facing the driving rotor section 26 is also formed of a permanent magnet. Therefore, the driving rotor section 26 is formed by a magnetic force between the rotor sections 25 and 26. The driven rotor portion 25 rotates along with the above rotation, and the shaft 23a rotates. Therefore, the impeller 23 fitted on the shaft 23a rotates, so that the electrolyte 2 is sucked from the suction hole 22a and discharged from the discharge hole 22b, and a flow is generated in the electrolyte 2 to be stirred. Will be. For this reason, the specific gravity of the electrolytic solution 2 can be made uniform.

[0024]

As described above, according to the storage battery electrolyte agitator according to the present invention, the electrolyte is agitated by the rotation of the agitating member provided in a state of being immersed in the electrolyte. The liquid can be directly stirred, and can be efficiently stirred. Moreover, since the stirring member and the stirring driving means are connected in a non-contact state to drive the stirring member, the stirring driving member can be provided outside the electrolytic solution tank.
Maintenance and management of the stirring drive member are easy.

Further, as in the storage battery stirring device according to the second aspect of the present invention, the stirring member and the stirring driving member are connected by a magnetic force so that they can be easily connected in a non-contact state. Can be.

According to the third aspect of the present invention, since both the agitating member and the agitating drive member are constituted by permanent magnets, the connection between them is more reliably performed. be able to.

According to the fourth aspect of the present invention, the electric power discharged from the storage battery is stored, and the DC motor is operated by the self-stored electric power so that the agitation driving member can be connected to the storage device. Since the rotation with the stirring member is performed, a driving device for driving the stirring driving member is not required separately from the storage battery. Therefore, a large-scale device other than the storage battery is not required, and the structure is simple, which is economically advantageous.

[Brief description of the drawings]

FIG. 1 is a schematic view showing a schematic structure of a first embodiment of a storage battery electrolyte stirring device according to the present invention.

FIG. 2 is a view schematically showing a structure in which a stirring member and a stirring driving member are connected to each other, according to a second embodiment of the storage battery electrolyte stirring device according to the present invention; is there.

FIG. 3 is a schematic diagram for explaining the structure of a conventional electrolytic cell stirring device for a storage battery, and is a diagram corresponding to FIG.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Electrolyte tank 1a Side wall 2 Electrolyte 10 Casing 10a Suction port 10b Discharge port 11 Impeller (stirring member) 11a Shaft 15 Drive impeller (stirring drive member) 16 Drive motor 16a Output shaft 17 Timer circuit 18 DC power supply 21 Depression 22 Casing 23 Impeller (stirring member) 23a shaft 25 Driven rotor unit 26 Drive rotor unit

Claims (4)

[Claims] 1. An apparatus for agitating an electrolyte for a storage battery for stirring an electrolyte of a storage battery, wherein a stirring member is rotatably supported in an electrolyte tank for the electrolyte, and the stirring member is An agitation driving member for providing a rotating power in a non-contact state is provided outside the electrolytic solution tank, and the agitation member rotates to stir the electrolyte by the operation of the agitation driving member. Stirrer. 2. One of the stirring member and the stirring driving member is made of a magnetic material, the other is made of a permanent magnet, and the stirring member is covered with an insulator having corrosion resistance to an electrolytic solution. An apparatus for stirring an electrolyte for a storage battery according to claim 1. 3. A stirrer for a storage battery electrolyte for stirring an electrolyte of a storage battery, wherein a permanent magnet is covered in an electrolyte bath for the electrolyte with an insulator having corrosion resistance to the electrolyte. Is rotatably supported at a position opposed to the stirring member, and rotatably supports a stirring driving member formed of a permanent magnet outside the electrolytic solution tank, with the rotation of the stirring driving member. Wherein the stirring member is rotated to stir the electrolyte. 4. The method according to claim 1, wherein the stirring drive member is driven by an output rotation of a DC motor, and the rotation of the DC motor is performed by electric power discharged by the DC motor itself. Stirring device for electrolyte for storage battery.